Hip boots for my boy

I have an 8 year old son whom I want to start fishing with me. The problem is that if I buy him waders he will outgrow them to quickly, not to mention he may get brave and think he can cross a river or something. So I have decided to try and find him some hip waders. Anyone know where I could pick some up for a youth with shoe size 3. Would like to get him a 4 or 5 for sock room a year or so of growth. I looked online and only found 1 place that sells the youth sizes. Hoping to find somewhere local in order to have them by the weekend.

got my 8yr.old grandson a pair of Proline hipboots size 4 at Northern Sales,Mt Vernon,under 50$ if I remember correctly

Sportco in Fife-- Hodgman Caster Hip Boot, sizes 3 to 13, $18.88. Prices good through January 20, 2003.

Thanks guys. I appreciate the info.