If you're at all interested in MPI's DS 50th Anniversary Complilation and you're an Amazon Prime member, I see where it's currently on sale for $10.66 until 1:50 pm ET today.
And if you're at all interested in the Deluxe boxed set of DS, I see where it will be on sale for $265.51 for Amazon Prime Members until 5:15pm ET today.
And if you're not a Prime, member, they'll actually allow you sign up for a free trial just to take advantage of today's Prime Day deals...