There is no definite answer to the question whether 80 yuan a catty of local pork is expensive, because "expensive" is a subjective concept and different people may have different opinions.

Generally speaking, the price of local pork may be higher than that of ordinary pork, because the raising cost of local pork is usually higher, including grain, feed, vaccines, veterinary drugs, water and electricity, etc., while the yield of local pork is relatively low and the growth period is longer, which will increase the cost and push up the price.

However, for some consumers, they may think that a catty of local pork in 80 yuan is expensive, because they may choose to buy ordinary pork or other substitutes with lower prices. For other consumers, they may think that the price of local pork is reasonable, because the quality of local pork is higher, the taste is better, and it is more in line with their consumption needs.

Therefore, whether 80 yuan a catty of local pork is expensive or not should be evaluated according to different consumer demand and spending power.