Basically the limits are for any 'outbound' payment. Whether you buy on ebay, or buy on gumtree, if you pay through paypal and money leaves, that will count towards your limit.
The limits are usually very low, remove them early before you run into complications later.
sorry proboably i was not clear enouth, i meant limit on single transaction, for example i will not be able to send 700£ or more to friends and family on single transaction i wonder if same aplies when you buy iteam on ebay, basicly my question is can you buy iteam which cost more than 700£