I have just spent £20 on Paul Gertner's Heart Breaker. Without giving too much away (I hope!) part of the gimmick involves cards which already have something drawn on them with what looks like a sharpie.
Here's my problem. The first sharpie I bought was nice and thick but is running out. Any subsequent ones I have bought (at the same shop) are much thinner and so will not match the gimmicked cards (it needs to look like you drew it during the trick).
All sharpies I can find on the net seem to be fine or super-fine.
The short version: Where can I buy a sharpie that writes a bit thicker?