HOLLAND, MI (WHTC) - What was a wild week for gas prices along the Lakeshore ended with a drop. This morning’s survey of Holland area stations had a per-gallon average of $3.51, down six pennies from last Friday, and it is 28 cents less than at this time last year. Refinery problems in Indiana caused a mid-week spike to $3.65; one station still had that mark on its marquee, while another was selling fuel for as low as $3.43 already.