I love my printer, but when in really detailed good quality mode, it sure is slow

I found some nice acid-free paper for making stickers and magnets to sell at FCN I figured they are small and inexpensive...and kinda fun. I did have to laugh at the package of magnet sheets "Now with 25% more!"... means there are 5 sheets, instead of 4.

I have some original pieces out being matted right now that will go to the convention with me:

Between the Body and the Soul
Came a Stark Naked Drummer
Children of Lir
Breaking Through
Smoke Dancer
Oh Crap!
I'll bring a few other originals with me un-matted as well, I think.

I am making prints of:
Between the Body and the Soul
Children of Lir
Breaking Through
Oh Crap!
Art Imitates Life
He Made a Harp of Her Breastbone
Oh Crap!
Geri
and
Freki

Stickers/Magnets are of:
He Made a Harp of Her Breastbone
Oh Crap!
Geri
Freki
Drawn to Life
Breaking Through
Outcasts of Gwynedd
Woven Song
Dance!
and
Between the Body and the Soul

I think that ought to be enough to feel out a convention.

Costs on the original pieces I am not sure of yet since I don't know how much the matting will cost yet. The rest I think will go as follows:

Prints: $10
Badges: $8
Magnets: $5
Stickers: $2

To those who have done conventions before, does this sound reasonable?
To those who attend conventions, would you buy for those prices?

Less than three weeks to go *bites nails*