I also in the past year or two bought a copy of
Chiller, the unlicensed 2-player game for the NES Zapper. It came complete with case and manual in very good condition, as well as a pamplet advertising other games released by
H.E.S. - the only thing missing from the set was the
dongle you're supposed to use to hookup the game, to piggyback the
10NES lockout chip from another cart.
At first, I just used a
Game Genie (which I also bought locally - woot for gametraders) to get around the lack of a dongle - the game genie itself overrides the need for a lockout chip with its own. Later on, after buying more local PAL games, I decided to take a risk and disconnect the pin on the 10NES chip in my NES, to stop it preventing my NTSC NES from running PAL games.
The
top-loading NES 2 was never sold with a region control mechanism, and I briefly considered buying one online, but decided Ebay prices were too high for something I essentially already owned.
A bit later on I scored a multi-cart, also made by HES, which actually has Chiller on it again. I haven't gotten the 2-player to work on it, but all of the games are functional to my knowledge.