The phrase "arguably cheaper" is correct and usable in written English.
It can be used when discussing a comparison of prices or costs, suggesting that there is a reasonable argument to support the claim that something is less expensive.
Example: "This brand of detergent is arguably cheaper than its competitors, making it a popular choice among budget-conscious consumers."
Alternatives: "possibly less expensive" or "potentially more affordable."
Running costs are arguably cheaper than a traditional high street premises – just a trading licence from the Canal & River Trust and, if you're static rather than continuously cruising, a marina or mooring fee.
The Conservatives have long argued that replacing Trident in its current form is the best option, but the Lib Dems say alternatives, including a slimmed-down, arguably cheaper version, should be considered.
Last month the UK's largest supermarket chain, Tesco, enraged animal rights campaigners when it launched a £1.99 chicken – arguably the cheapest on sale anywhere in the UK.
Consider the much-beloved Ressence Type 3. The primary difference between it and a $2,500 Swiss Army Alpnach Automatic Chronograph (arguably the cheapest mechanical chronograph you're going to find that isn't absolute garbage) is the case and the face.
Arguably the cheapest tuner Sirius has, and it already comes with a car kit.
Compared with a day at a downhill ski resort, cross-country skiing is quieter, cheaper, arguably a better workout and less likely to result in sprains or broken bones.
While these units are arguably expensive (a cheap ATM tops out at about $3,000) it's clear that the back end is what matters here and not the box.
However, most of the 2011 cohort would have graduated in the 1970s, when public-university education in America was much cheaper (and arguably more prestigious) than it is now.
Less sophisticated, but cheaper and, arguably, a lot more fun, Bollywood Coffee Box (curry'n'rice, £3.50-£4.50, 99a Bruntsfield Place, 07910 453121, bollywoodcoffeebox.wordpress.com), is another favourite with curry lovers, housed in a former police box.
McLaren were widely expected to ditch Button for the younger, cheaper and arguably faster Vandoorne, 24, next year, but the champion of 2009 is a cunning strategist on and off the track and he has cleverly negotiated a two-year extension to his involvement in Formula One when it is most likely he will never drive a car competitively in this sport again.
