If you want the best price on a good rice cooker, check out your local chinese/asian market.
National is the brand they tend to favour, and what I’ve always used, without complaint. They come in every available size and are reasonably priced.
There are rice cookers, rice steamers, vegetable steamers, etc.
Check that the ‘rice cooker’ you buy, specifically states it will keep the rice perfect for up to 8 hrs. That’s how you know you’re really buying a ‘rice cooker’, and not a vegetable steamer that cooks rice, (but doesn’t keep it for hours!)