Should be the same price. same labor and parts involved. You have a second hydraulic pump in the rear of the case, but they don't wear out that frequently.
Unless you are building a white glove restoration I would upgrade to at least a TH350, or better yet a 200R4 transmission. TH350 is a bolt in having only the shift linkage different; while the OD 200R4 requires a modification of the transmission cross-member to bolt up as well as the linkage being different. A 700R4 requires cutting the drive shaft shorter in addition to linkage and tranny mount.