[petillo64]

so i started to collect Braves prospect Austin Riley but i have notice that his cards are going for way more than i would like to spend on an 18 year old kid who could be a bust. I have a decent amount of his cards should i hold pat or should i sell since they are selling for pretty good prices now

I'd hold for a bit if you think he will crush it in the minors. The kid has some pop and it translated to rookie ball right away. If he starts mashing low-a prices go up. If he mashes low-a and gets a promotion they go up even more. If he mashes both low-a and high-a... you get it.

Hardly ever will a hyped prospect whose prices are already high, maintain that price after a major league call-up (harper/trout and extreme upper-echelon, high demand guys are just about the only exception...), but there is lots of room for prices to grow with a player this young and this low in the minors.