if you want a professional job then go to a professional. the reason i recommended that shop to go for cheap extensions is cos thats what i do, but i didnt think about if you would be able to do them yourself you would probably have to get other ppl to hel you round the back
thats what i did the first time i had extensions i bought them and my friend put them in now i can do them myself!!
It is quality hair that i buy and the ones i have now have lasted me just over 6 months and stil look brand new, i wash them once every 3 weeks and spray with batiste dry shampoo to get rid off any odours (smoke) and they look brand new still lol