heat proof synthtec extensions???

any one heard of vixen wigs from ebay seller.she claims her synthetics extensions can be curled colored etc.and real real cheap.i dont know if its too good to be true,anyone know?also she doesnt have a lot of colors she has one similar to my medium brwon hair which is medium dark brown #4.her pictures are hard to tell the actual color.is that color #4 way too dark. i am very confused. thanx girls

one bad thing about wawa is the color range. The browns are all dark. The blonde is PLATINUM....and some reds...nothing much in between.