I dropped my 4s and there is a small crack in the corner of the front display. I need to replace the display so that I can sell it in a few weeks but I'm not sure where to buy the replacement display. iFixit (a company that I know I can trust) has a replacement for about $130. But that's a pretty steep price. I've found another option on Amazon for $30. Lots of other $30 options from other companies online but I would hesitate to order from them. Can anybody recommend a reputable place to purchase a replacement display/digitizer for a reasonable price or is iFixit my best bet? Thx.