i believe it doesnt cost anything.
An Itunes account is free
Upgrading iTunes is free.
I'll test it right now... Yeah, you can delete it and the album artwork will not change on iTunes!
Most songs from the iTunes store in New Zealand cost NZ$1.79
The iTunes software is free, (See links below)
Idk why it does that but heres the solution, just convert it to an ACC file by right clicking it on itunes, then you can put the artwork on there, it does that sometime I do not know why
Yes, the artwork is just a picture and can be copied via internet
£6.99
$5.00
99p
No. However, if you want it to download artwork using iTunes, you have to create an iTunes store account. This needs to be linked to a credit/debit card.
No. Itunes does have to approve your podcast however and you may have production costs for your podcast.