Not that I've seen in my Wal*mart yet, However they have the Ertl 1:72 ones. Lucky me, if my store runs out, I have a picking of some 15+ stores in a "safe" traveling distance.
List sorted by distance from me:
1. San Diego, CA 92111 (Clairmont Mesa, my "2nd back up")
2. Poway, CA 92064 (My Wal*mart)
3. San Diego, CA 92123 (Backup...)
4. Santee, CA 92071 (never tested)
5. La Mesa, CA 91942 (again, not tested)
6. El Cajon (C), CA 92020 (Double Floored!)
The rest are untested for me, but close...
7. San Diego, CA 92115
8. El Cajon, CA 92021
9. San Marcos, CA 92069
10. National City, CA 91950
11. Chula Vista (W), CA 91910
12. Vista, CA 92083
13. Oceanside, CA 92056
14. Chula Vista (S), CA 91911
15. Oceanside, CA 92054
16. Chula Vista (E), CA 91915
17. San Diego, CA 92154
18. Oceanside, CA 92057
19. Temecula, CA 92590
20. Murrieta, CA 92562