when we have just took boots counts towards your lug allowance, you have to pay for board or skis usually £15 return although looks like easy jet are charging each way.
I bought some boots in Pamporovo last season. Got a decent sized boot bag too, enough room in it to put a load of other stuff in, yet small enough that it could be taken on as hand luggage. No charge. Saves having to wait around twice for baggage collection at the other end (unless you're checking in skis / boards too, in that case, you're waiting anyway).
Last year my sister didnt book hers in, took them as luggage in boot bag put her a little bit over weight but only cost a fiver excess baggage. From East Midlands if thats any help.