Have a look on the ever popular Draganfly and F W Thornton websites. These will give you a feel for the asking price of new stock. As a cheapskate, eBay would be my choice, genuine old stock AE/Hepolite would be the chosen brand, as modern day Hepolite marketed by Wassell still get a mixed reception. Here only the brand name is the same, product quality and function variable according to Forum experience.
Swarfy.