As an extract from the researched prices for 
1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid compound with nicotinic acid (1:1) there are currently shown 20 prices in the last 9 years for CAS equal products. This small overview is intended to serve as a guide and trend.
Prices are in USD and range in year 2017 from USD 69.00 for 5 g to USD 11.00 per 10 g in 2023 .