Yeah that's literally the only way to go about getting more packs w/o unnecessarily breaking the bank if that is your goal just to get packs - considering how damn expensive they are + factor in the amount of untamed cards that have already been 100% minted, it really doesn't give you a very realistic shot at getting too much variety from the packs in the first place...definitely lucked out big time by pulling that gold foil card, otherwise that overpriced pack would've basically just been a big ol' deficit that you theoretically could have sold for enough to buy a few legit cards (or 1 really good card...all about personal preference tho..🤷‍♂).
Packs right now are definitely just quite the gamble considering how expensive they've been - whereas trying your luck at finding some diamond-in-the-rough cards you could buy from monstermarket & getting a lil cash back while you're at it is prob gonna be more economical..again, unless you luck out w/ a gold foil pull like you did, but you're crazy lucky & I'm insanely jealous if you happened to get more gold foil cards from packs after this one lol.