My primary goal is getting enough packs to add the full CL collection to my Silver & Gold league regular foil accounts and a good chunk of the CL cards into my gold foil account. For as long as the $4 packs last after that I'll buy with game earnings and hold the packs long term as investment assets. Splinterlands has proven multiple times that getting game assetts at the store price is a great move if you're willing to hold those assets for over a year longer.
Although in the current markets it's a tough decision between converting game earnings into CL packs or SPS, I think the unknown availability of the CL packs makes that the right choice. I think there is a much better chance we see CL packs at $40 by this time next year than seeing SPS at $2.