The seasonal fruits and veg that will actually lower your checkout total this weekend

In-season shopping is one of the easiest ways to save at the supermarket, which can be challenging at this time of year as growing regions transition from autumn to winter crops.

Still, there are plenty of bargains, including one unexpected fruit that is particularly abundant.

These are field tomatoes, which are selling for as low as $2.69 per kilo at Box Divvy, co-founder Anton van den Berg explains.

While Box Divvy has marked field tomatoes at a very low price, shoppers will pay more at the supermarkets for these very same tomatoes, but still lower than other varieties.

Coles' most affordable tomatoes are selling for $4.90 per kilo, Woolworths has marked theirs at 50c each, and Aldi is selling tomatoes for $4.49 per kilo.

"In some categories, oversupply collides with slowing consumer demand, leaving farmers under pressure and good food at risk of going to waste," van den Berg told nine.com.au.

"We're helping move excess produce directly from farms into communities so fresh food gets eaten instead of left behind.

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"It's how we reduce waste, support growers and pass on real value to when the system needs flexibility most.

"All the same, it highlights the plight of growers who – in some cases – are getting paid the same money as they did back in 1999.

"Whilst yields and efficiency have improved since then, input costs like fertiliser, diesel, and transport have gone up.

"However, no grower wants to see their produce go to waste, so Box Divvy cuts the price in order to stimulate demand."

While field tomatoes have experienced the most "extreme price fall this week", Roma tomatoes, cauliflowers, green beans, celery, and broccoli, are also cheap, and have been "for a few weeks now" according to van den Berg.

Coles is selling cauliflowers for $3.90 each, at Woolworths you'll pay $3.50, and Aldi has priced theirs at $2.69 each.

Green beans are $10.40 per kilo at Coles in pre-packed bags, Woolworths is selling theirs loose and at $6.90 per kilo, and Aldi has packaged green beans for $9.31 per kilo.

At Coles, celery costs $4.20 this week for a full bunch, at Woolworths you'll pay $4.50 and Aldi has full celery bunches for $3.69 each.

Coles is selling broccoli for $4.50 per kilo and baby broccolini for $3.50 per bunch, Woolworths has priced broccoli at $1.49 per head and broccolini at $2.30 per bunch and at Aldi you'll pay $2.99 per kilo for broccoli and $2.99 per bunch.

** Prices are accurate at the time of publication and based on Coles, Woolworths and Aldi online prices.