Buying vs. selling: which price direction helps your order?

Entry: potentially more shares for the same money

Hypothetical user: Maya has already chosen her market and outcome. She wants to buy with a fixed total spending budget.

Holding other conditions equal, a lower proposed purchase price points toward potentially more shares for that budget. A higher proposed purchase price points the other way: potentially fewer shares for the same money.

But a quoted price alone does not tell Maya her final result. She needs to distinguish:

• Total debit: the total amount spent, including applicable fees.
• Net shares: the shares she receives after any applicable fee effects.

The meaningful entry comparison is net shares for the same total debit—not simply which price looks lower. A lower proposed price that never fills has not delivered more shares.

Exit: potentially more proceeds for the same shares

Hypothetical user: Leo has already chosen the shares he wants to sell before resolution. He wants to receive more money for that fixed quantity.

Holding other conditions equal, a higher proposed sale price points toward potentially more proceeds. A lower proposed sale price points toward potentially less.

Here, the distinction is between:

• Gross proceeds: the sale amount before applicable fees.
• Net proceeds: the amount received after applicable fees.

Leo should compare net proceeds for the same number of shares actually sold. A higher proposed price does not establish that those shares will sell, or what the final after-fee amount will be.

More net proceeds also does not, by itself, tell us whether Leo made a profit. That requires his cost basis, which this hypothetical does not supply.

Within your limit does not automatically mean better

An approved limit defines a boundary, not a benefit.

For a buyer, a purchase price can remain below their maximum while being higher than another proposed price. For a seller, a sale price can remain above their minimum while being lower than another proposed price.

Both prices might fit the user's boundary. That does not make them economically equivalent. With other conditions equal, buyers prefer the lower price and sellers prefer the higher one—but fees and actual fills still determine the result.

A permitted price must also fit the market

For the international Polymarket CLOB, price increments are market-specific. A submitted price must conform to the applicable increment, often called the tick size. The official order-book documentation identifies the market's tick-size field.

This is a constraint on permitted prices, not evidence of a benefit. A price can conform to the market's increment without improving the user's economics or producing a fill.

This discussion concerns international CLOB mechanics, not US-app support or account behavior.

Read a proposed change in the right order

Before calling a proposed price change helpful, ask:

1. Am I buying or selling? Lower points in the favorable direction for entry; higher points in the favorable direction for exit, with other conditions equal.
2. Am I comparing the same goal? Use the same total debit for entry or the same share quantity for exit.
3. Does the price meet the market's requirements and my approved limits? Neither condition alone proves improvement.
4. What actually filled, and what did I receive after fees? Until that is known, describe the benefit as potential, not completed.

TickBetter: PRE-ALPHA context

TickBetter is PRE-ALPHA and currently in development. Its planned order-working assistance is intended to pursue a potentially better entry or exit after you choose the market and outcome, while preserving your goal and approved limits. These are design intentions, not currently available execution capabilities.

Keep the distinction in mind for your next order: a favorable direction is a possibility; the after-fee result is the evidence.