Here They Are: 1) Silk Touch + Unbreaking 3 = A Long Silk Touch Price: 15k I accidently used the pick ONCE! 2) Efficiency 3 + Unbreaking 3 = A Long Lasting Fast Pick Price: 8k Or Make A Offer In Private Chat! Click Here to do that!
Item 1 is a reasonable price. Item 2 is too expensive, IMHO - it should be around 2k. (That's my opinion only - you asked for opinions)
2k. Maybe 3k if you're lucky. Less than 2k if you want a quick sale. Same kinda principle goes for #1 - I've bought/sold them sometimes for around 5k; and sometimes for around 15k. It all depends on who wants one, who else has 'em, and so forth. Best of luck with it, regardless.