In Diamond terms:

regular prices pf items in diamonds
(5*300)+(10*300)+(10*150)+(10*100)+(10*200)+(10*150)+(10*100)+(5*100)+(5*100)+(20*80)
= 1500+3000+1500+1000+2000+1500+1000+500+500+1600
= 14100


non-bundle discount prices
(5*150)+(10*150)+(10*100)+(10*50)+(10*120)+(10*90)+(10*60)+(5*60)+(5*60)+(20*40)
=750+1500+1000+500+1200+900+600+300+300+800
=7850

bundle price
=3900

savings: 3950 off non-bundle discount, 10200 off regular

(also if you haven't yet passed the 2k dia spent mark, you can technically add the wheel ticket, valued at 500 diamonds, to the savings)

I would, but since its not /technically/ part of the bundle, I left it out.

Thanks for the additional math :)