I have to agree with Tramp the range of locomotives available in Advance is considerably limited in comparison to standard plarail, however having said that I'm aware of at least 20 different locomotives and I'm sure there are more on the way as they seem to be pretty good sellers.
I also tend to buy most of my Advance stuff from Amazon as although sold in their marketplace directly from suppliers in Japan which means a bit of a time penalty they are considerably cheaper than the equivalent items on eBay. However I do use eBay for the odd locomotive I've not been able to find on Amazon and also I've purchased a few 'job lots' etc... off eBay which has delivered me a good range of track, the basic stuff I can use for either and the points and stuff which can be used for standard plarail locomotives. In other words as I'm interested in both scales its a win win scenario for me. I've also passed on some of the track and duplicate loco's to my young nephews
I also tend to buy most of my Advance stuff from Amazon as although sold in their marketplace directly from suppliers in Japan which means a bit of a time penalty they are considerably cheaper than the equivalent items on eBay. However I do use eBay for the odd locomotive I've not been able to find on Amazon and also I've purchased a few 'job lots' etc... off eBay which has delivered me a good range of track, the basic stuff I can use for either and the points and stuff which can be used for standard plarail locomotives. In other words as I'm interested in both scales its a win win scenario for me. I've also passed on some of the track and duplicate loco's to my young nephews