KBKids online has all 4 sets (4816-4819) for 4.99/each located in "LEGO Great Value" section. Here is the link: (URL) well :) (...) (24 years ago, 17-Apr-01, to lugnet.market.shopping)
Be sure to use ebates and get 5% and also a coupon code from either www.frugalrewards.com or www.flamingoworld.com...you should be able to get them for just under the $4.99 retail price. (...) (24 years ago, 18-Apr-01, to lugnet.market.shopping)