I don't know exactly how much it will be but i can try to send it cod to you..I'm sorry i haven't gotten back to you sooner still kinda new to the sight and didn't see the reply setting..
no need for COD - just put them in manilla envelope and mail cheapest way (media mail or 1st class) - would think $4 would cover it, probably less - have a scale? weigh them all together and I'll check on the USPS calculate site