You present your vehicle, you browse other owners', and when two people are interested in each other's car, it is a match. You then talk directly: what each side brings, the real condition of both cars, and any difference in value. Swapping skips the slowest step of changing car — finding a buyer for the old one before you can buy the next.
That is what makes a swap different: you are not only the buyer, you are also the seller. Do to the other vehicle exactly what you would want done to yours — papers, chassis number, test drive, mechanical check — and be ready to open yours to the same scrutiny. A swap where only one side checks is a swap out of balance.
That is the normal case, not the exception. The difference is settled in cash, from the owner of the cheaper vehicle to the other. Set that amount from what the two cars are actually worth on the market — not from what each owner believes theirs is worth. A swap is still two transfers of ownership: check the registration formalities with the competent services before concluding.
Present your vehicle, browse other owners' and wait for a match — when each of you is interested in the other's car. You then agree the terms directly: the condition of both cars, any difference in value, and the transfer formalities.
The difference is settled in cash. Base the amount on what the two vehicles actually fetch on the market — compare with listings of the same year and mileage rather than an emotional estimate.
Browsing and showing interest is free. Unlocking a match's contact details may use credits depending on the current settings; the exact cost is shown before you confirm.