Really quick question, I've found a second hand Pentax DA 18-250mm ED F3.5-6.3 lens for sale for $450 locally which is apparently in top condition. Is this a good price? I was looking at the Sigma equivalent last night and it was $700+ but I'm having trouble finding the list price for the Pentax version online anywhere to compare. I've heard this is just a rebadged Tamron - is that a bad thing? Sorry for the noob questions
Thanks in advance!