A sidesaddle is an unusual saddle and probably won't be around in a couple years for you to obtain as easily as you could now.
However, riding is a luxury. And tack is extra luxury. I didn't have a saddle when I got my first horse. I rode bareback all the time. A saddle came probably a year later.
Fastforward to now. I finally was able to ride my mare. Guess what? I didn't have a saddle. The saddle I did have was broken. The other didn't fit her. So I started retraining her while bareback until I managed to trade one of my useless saddles (useless to me anyways) for one I could use. Now I can ride with a saddle.
Is it the saddle I want? No. I desperately want a ranch type saddle. But its a saddle and it'll do for now until things get better again.
Every aspect of riding costs a lot of money...you're going to do what you're going to do. If it were me, I'd probably impulse buy the saddle if I had the money. That way I knew I had it, at least. I'm not saying thats the smart thing to do. But when I set my eyes on something, I have tunnel vision until I have it.
Oh, and this thread is useless without pictures!
EDA: Useless without pictures, so heres one!