You could lose it in an alt-coin scam? That's what most people who ask this question do. 
I think $ 300 is too little to invest in bitcoin. If you invest in bitcoin you will gain very little profit. You should invest in lower value currencies to get higher returns
In investing there is only percentage. Price is completely irreverent. So is scale. $300 bucks worth of crap is not a better deal because cookies cost to much. what might be said with a scam, if it is related in that direction. or just boast of a project that wants to take advantage for personal interests only?