So here it is in brief.
Up until a year ago you could order a $10 Euro giftcard for Steam for 5699 points.
You could order as many as you had points to support the purchase of, which often led me to snag five or six just prior to a major sale.

Then they limited it to one giftcard every 30 days.

Then they changed vendors. No more Euros, only USD.

Then they changed the price. 5199 for $10 USD seemed fair.
15,600 for $10 is absolute extortion.