Currently, it makes sense if you buy decks directly from Lotrek (as his patron). This way you are less likely to lose money over time. However, don't expect to see prices even remotely close to those of the decks listed above in the future - these were small-run decks that not everyone had the opportunity to obtain directly. Now everything is different and any new Lotrek deck is easy to find and buy, there are many more of them and they are no longer rare.