Or I should say what is just the creativity in the domain name worth? The registration was less than $10 but what is the monetary value of the name. There are sites such as www.forumgrow.com which pay posters 12 cents a post and charge forum owners more. I thought "jumpstart" might be a catchy and somewhat funny word to make a speudo phrase for a domain so thats the only current value to the domain since it is inactive and dead right now..
The domain is probably just worth the registration fee at best. Maybe no more than $20. It is a creative name but the length of it is to long. My faux paux of choosing forumpaidposting. Memorable names paidposts - inb0x - adhocpost and a few others are short and to the point as well as memorable. If you did make a service to the domain than the value will obviously go up. There are about 49 paid posting services out there now. Not all are active. Many have sold. Some have sold as low as $60 I believe. Only a few have fetched more than $xxxx depending on the sales and profit and marketability of domain name. (ie Paidposts) I know what adhocpost and forumpaidposting both sold for. I owned them both and sold them both.