On Amazon right now you can get this fun Intex Challenger 2, 2-Person Inflatable Boat Set with French Oars and High Output Air Pump for only $34.30! My in-laws have this boat and it works great and is very sturdy. If you have a lake it is so fun to have!
This will ship free with Amazon Prime or qualifies for free Super Saver Shipping with a $49 purchase.
Note: Amazon prices and promotions can change at any time. The price(s) listed in this post is/are subject to change.