Got my first road bike after using a mountain for years. I can very easily "max it out" sitting down to the point where my legs start spinning comically fast at the highest gear on flat ground with no wind. I could with my mtb as well but it took much longer.
This is the bike
https://www.peddler.com/product/cube-attain-pro-disc-2018-road-bike?gclid=EAIaIQobChMIitTMmO7p2wIV0mYbCh0_CgXwEAQYASABEgJP3_D_BwEIs it difficult to fit higher gearing, and is it going to be expensive?