Because there is nothing published. Garna's site advertises transparent pricing and zero setup cost, but there is no pricing page and no rate, percentage or per-contractor figure anywhere on it. Their terms also allow per-transfer flat rates or percentages on payouts in local currency or through regional banks, without saying what those are. In practice that means two things: you cannot model what a payout run will cost until somebody quotes you, and once they have, there is no published number to hold anyone to later.
Kleos puts it on the page. A flat $50 per contractor with discounts at volume, currency conversion capped at 3.5% and written into your contract at signing, zero fees deducted from contractors, no setup fee and no minimum commitment. You can build a budget from the website before you speak to a single person.