Like so many who've already responded, I've been there, done that, a few times. First my mom kept whining 'Gee, I'd love one of those. Why don't you make ME one. I AM your mother, you know.' I informed her that they weren't free or anywhere close to free. Finally I told her, 'You pay for it and I'll make you one.' She did. She kept finding fabric that she liked while we were on a shop hop. When she totaled up all her receipts, she was shocked! She hadn't even bought the batting, backing or paid for it to be quilted! I've not heard another word from her on the subject since, other than she'll be happy with that quilt for life.
Another friend of mine, who didn't quilt, wanted one for herself after seeing my mom's. Told her the same thing. Love her like a sister, so same offer. She was dumbfounded when she had to keep forking over money for fabric, then batting, then the quilting. By the way, neither offered me a cent for my time, nor did I ask.
Same friend wanted me to make one for her daughter, said she'd pay me for my time. I was only going to use material that I had in my stash, she was aware of this. She had me measure out exactly how much material I used and she paid me $10/yard. Exactly what I paid for the material when I bought it. Not a cent more. She supplied the backing. Worked out to be about 3 yards of material. Can't say how many hours. I didn't count.
Same friend wanted a quilt for her son. I told her I'd only make it if she helped. She now knows how to use a rotary cutter, ruler, how to iron, how to square a block, how difficult it can be to arrange blocks in a quilt, and how to use a rental long arm! None of it was a piece of cake for her. She had carpal tunnel issues. She also said her children are set for life. She doesn't want me to make HER do more. She's SO NOT a quilter type person. She took me out to dinner once during the middle of the last quilt. I'm sure she has no intention of thanking me in any other way.
A co-worker approached me the other day. She wanted me to make her daughter a dance recital outfit without a pattern, because she knew I sewed! The short of it was I told her sewing can be enjoyable if we did it together, and if she had a pattern. I told her I'm not a professional seamstress. She decided to ask one of the other women who quilt at work.
Good luck. I'd love to hear from you, by pm, if you do ever get compensated for your time. My guess is that they will assume that $300 will have been padded to include something for your time. Regular people are clueless.