The Gunners are one of four top-flight clubs now selling two different categories of shirt: a full-quality edition which is worn by the players on the pitch, and a replica copy at a lower price.
Arsenal's replica jersey costs £55, just over half the price of the authentic design.
Manchester City are not far behind in second, with their authentic shirt costing £90.
City do sell a replica, though, which is the cheapest home shirt sold by a 'big six' club at £48. Tottenham and Chelsea, by contrast, sell their own replica versions of the same Nike shirts - branded 'Stadium' jerseys - for £60 and £59.95 respectively.
Chelsea also offer an authentic ('Vapor') shirt which comes in at £89.95, about the same price as City's premium option.
Crystal Palace are the only other club to sell an authentic shirt, with theirs the cheapest of the quartet at £48.99.
Those higher prices on their replica jerseys give Chelsea and Tottenham the dubious honour of finishing in joint-last place along with Manchester United when it comes to the cheapest option available at each club.
PREMIER LEAGUE HOME SHIRT PRICES
The Red Devils' replica Adidas shirt also costs £60, with no authentic version offered.
Burnley and Everton, whose kits are manufactured by Puma and Umbro respectively, take the prize for the cheapest home shirts in the league, with replicas costing £40.
Of the sides not playing in European competition this season, meanwhile, the most expensive home jersey is sold by Newcastle United at £54.99.
The average price of the cheapest shirt each club sells is £49.30.