Are FOXY LOCKS extensions good ?:)?

I want a new set of hair extensions and I been looking at Foxy Locks, There �56 for 120 gram and �74 for Deluxe 160 gram, I was thinking of getting the 160 gram, well my boyfriend said he would get it me as my present o: so what I am asking is, is are these extensions any good? are they worth the money, and do they last a long time, oh and you can straighten, curl, wave, wash and dry them too can't you??