IRS Offers Tips for Year-End Donations
Rules for Clothing and Household Items
To be deductible, clothing and household items donated to charity must be in good used condition or better. A clothing or household item for which a taxpayer claims a deduction of over $500 does not have to be in good used condition or better if the taxpayer includes a qualified appraisal of the item with the return. Household items include furniture, furnishings, electronics, appliances, and linens.
I don't know of any software that has pricing. I use garage sale prices and always take a picture of my donations in case I am audited. Always get a receipt for your donations.