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Beach Camera is offering the
Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens (newer version) for $249.99 with free shipping on Ebay. This price is ~$99 lower than Adorama and B&H.
The price includes 3-piece filter kit & lens cleaning kit.
They have Pentax, Canon, Nikon, or Sony versions.
Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens