Actually, IIRC
Raiders of the Lost Ark was one of the earliest movies released to videotape at a "sell-through" (i.e., affordable) price, as opposed to a "rental" one (where the studios expected to make most of their money from selling to video rental stores, since in those days the idea of someone wanting to own a personal copy of a movie was novel); it and
Star Trek II: The Wrath of Khan - also from Paramount - were I think the first two big, high-profile releases to get such pricing. I think the original MSRP for
Raiders was $39.95; I'll have to check when I get time. I don't think any of the Indy movies were ever released on video at a price higher than $39.99 USD, in any format (even the laserdiscs used to top out at around $39.99, I think), at least individually (that is, not counting sets of three or four movies, obviously).
And yes, it was indeed also released on Beta (as well as laserdisc, and I think even CED videodisc). I have an original Beta cassette; it's my first movie I ever got a prerecorded, commercial copy of (as opposed to a homemade recording from TV or somebody else's copy of something). I treasure it.