HiBid review: Bidding increments

Stritzinger auction of 2/26/2005 thru 3/9/2005, item # 67. I had a high bid of $100 on this item, according to your increment bidding rules, the next valid bid should be $110, however someone now has a high bid of $105. When I tried to bid $105, I was told that I had to increase my bid to $110.What is with this,you set the rules, how about following them. This is the third time I had this happen. The bid is now $105, and the next bid has to be $120. $15 increment , not $10