Which clip-in extensions should I purchase?

I've looked at Rapunzel Rapunzel, Foxy Locks, Luxy, ProExtensions and many more. They are all around the same price of $100. Rapunzel Rapunzel are $89.99, but the shipping is $9.50 because the company is located in UK. Foxy Locks is located in UK as well, they cost $90 and shipping is either $12 or $20 depending on if you want the shipping insured or not. Luxy extensions are $119.95 and the shipping is free worldwide. I can tell from watching videos on youtube that they are really good quality and the owners are two young, gorgeous sisters. However, I have seen Proextensions in person, and they look beautiful as well. Not as thick, but they are also cheaper. They cost $99.99 and shipping is free overnight shipping! Basically, I'm in a toss up between Proextensions and Luxy extensions. Please help :/