ebay has tons....you might not get great flints in all the ones you buy(most sell like 10+) but id bet youd get enough good ones to make it worth it.....also try rmc sports...i orderd a pack of 4 from them before...and they were all good....just too long for my rifle....im lucky to have 3 blackpowder shops around here and i get to hand pick mine out of 100s....i have a tc hawken flinter...ive tried every kind of flint i could find and the only one to throw good sparks are the black english....i even spent a few bucks and bought german fancy special flint...i cant remember the name...its german something....its cut like the tc ones you bought and told it was the best flint there is....its tough as can be and didnt chip at all or dull.....but it didnt throw as good of a spark as the english....close...but not close enough......i did like the fact that it didnt chip or dull in probably 15-20 dry fires......but now that i got a good frizzen on my lock flintlife went up also...i can get about 30 out of a black english easyily.....and could resharpen it if i wanted....but try searching the net...ebay..ect you can find them on the net easyily.....ive found lots....but thats before i found all the shops that have them around here.....speaking of that i better go soon and stock up before the weekend warriors that barely hunt or shoot their rifles go and take the good ones....and stock up on BP before they get there too! lol.....good luck