Not too good with introductory statements so... I thought I'd detail some of the benefits of t-shirts:
Compared to printing books, t-shirts are easy. Tees can support a lower print run and provide a decent profit. My local silkscreen specialist
1 does a minimum 12 shirt run for $12/shirt. For an initial investment of $64 [plus initial screen costs and tax] you can sell your very own tee at a reasonable mark-up. For 50 shirts the cost per unit drops to $8... and I'm not lowering the price of the shirt. More profit.

The risks:
- A high print run may be appealing but if your design isn't popular enough, you'll be left with a lot of surplus
- Size selection can be tricky. I used a 1:3:5:3:1 ratio for Small:Medium:Large:XLarge:2XLarge - but some designs are more popular for different sizes
- Not enough color choices can have some customers saying, "I'd buy it if it was available in red"
- Too many color choices can leave you with a surplus of unpopular colors
- Ladies' tees are nice, however they are more costly to produce and some of the sizes are ridiculously small. Size ratios of 1:1:5:5 for Small:Medium:Large:XLarge [see above]
The risks aren't too bad though. You can start small and take bigger leaps as you feel more comfortable. The black tee with the white printing is usually the first step. Expanding into colors from there.
Your thoughts and comments are appreciated.
1minimums and prices will vary at different locations. I chose my silkscreen specialist because of a recommendation. Shopping around to compare prices isn't a bad idea though.