quid keenly identified the 1:7 reverse split In May 2017. In a 1:7 reverse split, your shares are worth 7 times as much per share but you have 1/7 the amount of shares. A share worth $3.78 now was worth (all else being equal) $0.54 a month ago. So a call with a $2.50 strike a month ago was well out-of-the-money, and would now be the equivalent of a call with a $17.50 strike. A $17.50 call with a $3.78 underlying (or a $2.50 call with a $0.54 underlying) would reasonably be worth only 5 cents.
So I now suspect that the quote is a stale quote that existed pre-split and hasn't been adjusted by the provider.
I can find no valid reason why those calls would be so cheap. The stock price has been trending down from its onset in 2000, so either no one expects it to be above $2.50 in a month or it's so illiquid that there's not any real data to evaluate the options.
They did pay some massive (30%) dividends in 2010 and 2012, they've been hemorrhaging cash for the past 4 years at least, and I have found at least on "strong sell" rating, so there's not much to be optimistic about.
NASDAQ does not list any options for the stock, so it must be an OTC trade.
With an ask size of 10 you could buy calls on 1,000 shares for $0.05, so if you can afford to lose $50 and want to take a flyer you can give it a shot, but I suspect it's not a valid quote and is something that's been manufactured by the option broker.