Here's another one we had missed from Universal Netherlands' Collected series:

Description
3CD newly remastered excellent career overview w/Sexual Healing, Let's Get It On, I Heard It Through The Grapevine, What's Going On, Trouble Man & more. Includes duets w/Diana Ross, Tami Terrell & Mary Wells.

Tracklist
[CD1]
1. (I'm Afraid) The Masquerade Is Over
2. Let Your Conscience Be Your Guide
3. Stubborn Kind Of Fellow
4. Hitch Hike
5. Pride And Joy
6. Can I Get A Witness
7. When I'm Alone I Cry
8. You're A Wonderful One
9. Try It Baby
10. Baby Don't You Do It
11. How Sweet It Is (To Be Loved By You)
12. I'll Be Doggone
13. Pretty Little Baby
14. Ain't That Peculiar
15. One More Heartache
16. Little Darling (I Need You)
17. Your Unchanging Love
18. Chained
19. I Heart It Through The Grapevine
20. You
21. Too Busy Thinking About My Baby
22. The End Of Our Road
23. That's The Way Love Is

[CD2]
1. Abraham, Martin & John
2. What's Going On
3. Mercy Mercy Me (The Ecology)
4. Inner City Blues (Make Me Wanna Holler)
5. Trouble Man
6. Let's Get It On
7. Come Get To This
8. Distant Lover
9. I Want You
10. Got to Give It Up
11. When Did You Stop Loving Me, When Did I Stop Loving You
12. Heavy Love Affair
13. Praise
14. Sexual Healing
15. My Love Is Waiting
16. Sanctified Lady

[CD3]
01. Once Upon A Time (feat. Mary Wells)
02. What's The Matter With You Baby (feat. Mary Wells)
03. It Takes Two (feat. Kim Weston)
04. Ain't No Mountain High Enough (feat. Tami Terrell)
05. Your Precious Love (feat. Tami Terrell)
06. If I Could Build My Whole World Around You (feat. Tami Terrell)
07. Ain't Nothing Like The Real Thing (feat. Tami Terrell)
08. You're All I Need To Get By (feat. Tami Terrell)
09. You Ain't Livin' Till You're Lovin' (feat. Tami Terrell)
10. Good Lovin' Ain't Easy To Come By (feat. Tami Terrell)
11. The Onion Song (feat. Tami Terrell)
12. California Soul (feat. Tami Terrell)
13. You're A Special Part Of Me (feat. Diana Ross)
14. My Mistake (Was To Love You) (feat. Diana Ross)
15. You Are Everything (feat. Diana Ross)

Amazon USA
https://www.amazon.com/dp/B00IK85OUK/?tag=imwan-20

Amazon UK
https://www.amazon.co.uk/dp/B00IK85OUK/?tag=imwan-21

I have very little Marvin on disc, so I am interested.
The Amazon price is $35.28, which I believe is the highest for this series.
Under third party sellers, ImportCd's has it for $13.96 plus the $3.99 shipping so that's where I'm going.