Marlin levergun prices are definately a regional issue. Down here in south Texas, a clean Marlin in .35 Remington will bring $350 in quick order. Even a very clean pre-safety 336C in 30-30 will bring over $300 without too much resistance. However, if you take the short drive north to Pennsylvania, the whole thing changes. The supply in that part of the country probably exceeds the demand.
I recently purchased a 99% condition 336 in .35 Rem, for $350 and was tickled to death to pay that for it. I firmly believe that it's all relative to where you are located.
Personally, I don't give a rat's rear end what the price on a gun is, if that's what I really want. I buy rifles to enjoy, not to invest in. To each his own, but if it's what you want, and you can afford it, why lose any sleep over paying $25 or $30 over what everyone else is paying?
I'd say that 95% of the rifles that I've purchased over the last 30 years were well worth every penny that I paid for them. I probably still own most of them, some of them have come and gone, but even those I got very close to what I paid for them back. What I lost, I more than made up in the price of enjoyment that I had in owning and shooting them.
Life's too short to get "wrapped around the axle" over nickles and dimes. Buy what you can afford, and have fun. Who knows how much time each of us has.