Is it a donation or retail price?

[Patco Lch 1,480]

Let me start by saying I am a firm believer in: "the workman is worthy of his/her hire". I try to be a fair even generous tipper and do our share of giving. I do donate to freeware developers just as a way of saying thanks for your contribution of time and talent to our hobby. But I am kind of confused by a certain "freeware" web site that charges IMO a rather hefty mandatory "donation" for there "freeware" photo scenery. I'm not saying the work is not worth it or it's an over charge but how do you call it a donation when it is for all practical purposes a charge for the product?  I've at times wondered the same when a TV preacher says for "your love gift of $$ I'll send you my book, study tapes etc. NO, it's for a price of,,,,,,, 

donation

noun

do·na·tion dō-ˈnā-shən 

Synonyms of donation

: the act or an instance of donating: such as

a

: the making of a gift especially to a charity or public institution

b

: a free contribution : GIFT

So I ask, when a specific price is stated for something, how do you call it a donation?

[Bob Scott 7,748]

Sounds shady.

If they're requiring money in exchange for goods or services, it's a purchase, not a donation.  The IRS would agree.  Makes we wonder if there's some sort of tax dodge being attempted, or an attempt to avoid supporting the product as you are expected to do with a retail sale.