Before the perks: a site, a seller and an agent worth trusting
Perks are a fair reason to pick a moment and a poor reason to pick an agent. These are the judgements that matter more.
What makes a spreadsheet site worth using

What makes a good spreadsheet site is easy to test in five minutes. Open ten links at random: dead links and listings that no longer exist show how often anyone checks. Look for dates beside anything that changes, such as coupon end dates, route times and prices. Look for the people behind it and a way to contact them. And look at what it refuses to publish; a site that lists every code and promises savings is selling something other than information.
Apply the same test to this one. Every deadline here carries the date we read it, the about page says who writes it, and the updates page logs what changed.
Reading a seller before you pay

Good sellers are consistent. The photos on the listing match each other in lighting and background, the size chart gives measurements in centimetres rather than letter sizes alone, and the options list says plainly what each variant is. A seller who answers a question about a measurement before you pay will usually ship what the chart says.
Vetting sellers also means reading what LitBuy cannot do for you. The warehouse checks size and colour against your order, but not colour difference or small size errors, so a vague chart becomes your risk. If a seller's listing came from a Fill&buy link to a resale platform, LitBuy says such orders do not support no-quality-issue returns.
Choosing an agent: rules worth comparing

Choosing an agent is mostly a matter of reading. A trustworthy agent writes down its storage rule, its return window and how it counts it, where refunds go, what its coupons apply to, and which company issues its terms. Compare those, not slogans. Every agent says it is cheap and fast; few say how storage is charged after the free period.
LitBuy's written rules, for comparison: storage free for 90 days per item, then a percentage of the price paid per day with a floor and a monthly ceiling; returns within 5 days (120 hours) of Warehoused; refunds only to the original method; shipping coupons, one per parcel; terms issued by LITBUY LIMITED (UK). Other agents set these differently, and the differences are in kind, not in a score.
Other shopping agents you will see

Other shopping agents run perk menus that look similar on the surface: a sign-up coupon, a points programme, membership levels, an invite programme. The conditions underneath differ. Some count their return window from a different status, some charge storage as a flat amount rather than a percentage, and some coupons apply to items rather than shipping.
So a perk name tells you little until you read its terms. We do not compare agents by name here or rank them; the sorter's approach (what you do, by when, what you give up, what is unpublished) works on any agent's perks if you have their rules in front of you.
Why LitBuy, or why a different agent might fit
What every agent shares: you pay item price and domestic shipping, the agent buys, a warehouse checks and stores, you pay international shipping on a parcel you build. What LitBuy does differently: storage charged as a percentage of the price paid after 90 days, a share reward that pays for posts in exchange for the order's return rights, user-voted Lit Line routes, a permanent membership level based only on shipping, and a public coupon feed with end dates.
When to use another agent: if you plan to return items often, if you need published membership figures before you commit, if you want an agent whose coupons cover item prices, or if you need a specific route LitBuy's estimator does not list for your country.

Why this LitBuy Spreadsheet

What we do differently is narrow and checkable. Most perk pages tell you what a coupon saves; we tell you what each perk asks of you and takes away, quote the clause, and date it. We check outbound links before publishing and remove dead ones, and we keep perk end dates in a freshness list so that expired offers get flagged rather than left to mislead.
We also leave things out deliberately: codes, coupon values, savings totals, reward amounts, community sizes and app ratings. None of them can be stated honestly from public pages.
Deciding what to buy, and what to watch out for

Deciding what to order starts with how sure you are. Items with fixed sizes in centimetres, plain colours and a seller who answers questions are low-risk. Items where fit is personal, colour is subtle or the listing is vague are the ones you may want to return, so keep their return route open: no share reward on that order, QC photos checked inside 120 hours.
Traps to avoid: assuming two coupons can both apply to one parcel; counting on level storage benefits that have no published figure; filming an unboxing for the reward before you have checked everything; posting an invite link with claims LitBuy does not make; and paying for a sealed item you might return, then opening it.
Next set of terms: Perk help desk and FAQ
