Dilemma in pricing!

In business you set prices to overcome expense of providing that good/service. Charging low price to gain customer is always a bad choice if you can't cover your expenses or profit too small to sustain growth. Take in to account your fixed expense (eg. time,stock image) and your fluctuating expenses(one off expenses. eg bank charges).won't go into that much detail but your prices need to be higher than these expense.

For example
make # be a flat rate
Logo design cost
Time * $1.50
Stockimage *$1.00
#Bankcharge * 1 or number of project
so your price should be like this

8 hours * $2.00
5 stock image *$1.50
1 bank charge * $5.00
=$28.50
This may be higher or lower depend on your mark up. As you gain reputation you can increase the price of time.

Ps . This is not the correct method to calculate prices but to steer you in the right direction.