Just one additional guy's opinion but, as others have noted, getting into waxing for yourself is not all that expensive, difficult, or time consuming. And if it is something of a family affair you recoup the cost and spend value time bonding with your skis and the family members who join in the effort.
Suitable space and some care are required. You may not care about some wax on the basement or garage floor but your better half might take a cleaver to you if it winds up on her carpet, kitchen floor, or deck, or her good dining room chars wind up scarred from the effort. We started out using drop clothes and old chairs to support the skis. Then we developed a bench with cheap on-sale saw horses and scrap lumber, added vises after a couple years. Used an ordinary old iron hand me down for a while until we upgraded to a ski iron, added stuff over time and now we can do our own basic repairs and sharpening. Doing that for ourselves for 5 (no wait, 6... no wait, 7, or is it 8 now) sets of skis saves a small fortune and we have some fun with it.
At this point we are beginning to experiment with waxes (not seeing much difference for an old duffer like me except on very cold eastern ice or very warm spring slush). Also experimenting with what we really need to take on trips. Last year we tried the liquid quickie wax and, to be honest, for the sake of touching up every couple days it beats hauling the iron and wax blocks and scraper and brush. At least that's the early opinion.
All in all, though, this is just another way to feed the growing addiction and get a little more long term bang for your $.