Just wanted to interject something here. 2.5 million in interest, with at least 10,000 backers (that’s the “standard” number used around here, I have no idea how many actual Glowforges were purchased). That means the interest so far is only $250 per person.
We are being given $150 in Proofgrade materials, $50 in the Glowforge Catalog, $50 in Inventables gift certificate, 10% discount in Glowforge Catalog, and then $20 per month that they are late (currently we are at 2 months late from the December 2016 promised date, so $40 and counting…). So in my book, we are getting the interest back and probably a bit more from the company because of these delays (currently $290 + 10% discount in the catalog store + all the initial video designs for free).
Don’t just take my word for it, you can look it up here from @dan himself.
Reference threads:
From April '16: Glowforge shipping date, beta releases, and bonus materials
From December '16: Schedule update (December '16)