Should there be any difference regarding implementing an options strategy on underlyings that have high prices (such as above $100) and underlyings that have low prices (such as below $10)? Given that all other parameters except for the underlying price are equal (such as volatility, time to expiration, etc.), should there be any difference in the way the options are performing (for example, regarding the options price appreciation in percents given a certain percentage of appreciation of the underlyings)? Or there should not be any material difference in percents, since even if the option on the high price underlying costs more, it will appreciate in value by the same percents as the low cost option? Is there any difference in this regard between trading single options and trading spreads (such as vertical spreads)? Also, if there is any other difference between such options which I did not mentioned (of course except for the options premium) please let me know. Thanks!