Yeah, thank Meg Whitman for that +$100 trick!
The +$100 is a BS rook, but you wouldn't get the car/item anyhoo if your top bid were just below reserve, so the auto bid to reserve when over makes sense in a perverse way!
If you think something is worth "X" & are willing to pay up to that amount, then no problem. However, if you're caught up in the frenzy & would really rather have paid less, then you need to bid less (i.e.: at your max. assessment of its value), & force the seller to relist at a lower reserve price.
That is really not much different than a Barrett-Jackson auction etc.
The others also look like the bidders upping their own bids when effectively blocked by another's highest bid price. IMHO it makes no sense to bid until the last seconds, set the max you'll reasonably pay & execute. otherwise you're caught up the int inane bidding wars which evil-bay loves.