At first I was thinking "Hit Points". However that did not fit the profile. I then dug deeper for other references such as:
покупка в рассрочку = Installment purchase
продажа в рассрочку = Sale by installments
But it was not until someone on the RU WoWP forums started asking what HP meant. And now I have the answer
Dang, Russian is hard to understand. I thought I would let all know what they (RU WoWP pilots) mean by the the abbreviation.