Complex sentence: The equipment found at a hamfest can vary significantly from the newest high-tech gear to used, refurbished, or even antique equipment, and haggling or bargaining is the most common means of sale.
Split into simpler sentences: The equipment found at a hamfest can vary significantly from the newest high-tech gear to used, refurbished, or even antique equipment. Haggling or bargaining is the most common means of sale.