Valid medium, given the free nature of the markets, it may be possible that such an offer type where both low amount of points correspond to lower decimal and lower amount of collateral value, so I believe medium severity is appropriate.

Valid high severity, due to incorrect computation of `depositAmount` within `abortBidTaker`, when aborting bid offers created by takers, the collateral refund will be completely wrong for the taker, and depending on the difference between the value of `points` and `amount`, it can possibly even round down to zero, causing definite loss of funds. If not, if points were worth less than the collateral, this could instead be used to drain the CapitalPool contract instead.