Unless doing so will put you in the poorhouse, wisely spending more on a better scope than what you think you'll need is seldom a regret.
Buying used increases your buying power and decreases the hit you take when/if you sell it.
With many manufacturers offering transferrable lifetime warranties, there's little to no risk buying used, and there's a lot of great scopes for sale here in the Hide.
That said, if you have a strict budget, both the SWFA and the Bushnell are quality scopes.