The purpose of the coupon is to make it an effective pre-sales tool for people that don't own Framework builder, but would consider attending the webinar to find out about it and potentially purchase after.
If it worked more like $50 store credit it would be more like a straight discount than a sale incentive which is our intention. We'll keep doing coupons like this for webinars, so once eCart comes out we will likely do a webinar with an eCart focus and eCart coupon.
We may consider offering access to recorded webinars at some point in the future, but for now we want to encourage attendance, so we don't offer recordings.