Buying in stores is more expensive than buying online
Everyone wants a bargain and the best way to get a bargain these days is to shop online. You may buy direct from online businesses or take part in an online auction where you may bid for both new and secondhand items. It makes you wonder if there will be any shops in the future as so many are closing in the high street because of online competition.
It is much cheaper to buy things online than in the store.
I do most of my shopping online as it works out much cheaper.
"It is much cheaper to buy things online than in the store." This explains that you spend lesson money when you shop online compared to when you shop in a store.
"I do most of my shopping online as it works out much cheaper." This explains that you do more shopping online than you do in the shops because it works out cheaper to do it that way.
"It is much cheaper to buy things online than in the store." これはお店で物を買うよりオンラインショップで買った方が安いこと。
"I do most of my shopping online as it works out much cheaper." これはオンラインショップで買った方が安いためショッピングはオンラインショップで済ましてしまうこと。
It is more economical to buy things online than in store.
Buying things online saves me a lot of money.
Economical- means that something is a better price.
Saving money- means that you have either saved on the cost of the item or even just by not needing to spend money on transport to the store.
Items are cheaper to buy online than in the stores.
This product is priced much cheaper online than in the store.
Buying things online seems to always be cheaper than buying them in the store.
I tend to save money buying items online than when I go to buy them in the stores.
Buying things in the stores is much more expensive than buying them online.
その他の例文：
Buying things online seems to always be cheaper than buying them in the store.
＝オンラインの方が、大抵の場合お店で買うより安いです。
I tend to save money buying items online than when I go to buy them in the stores.
＝お店で買うよりオンラインで買った方がお得な気がします。
Buying things in the stores is much more expensive than buying them online.＝お店で買うと、オンラインで購入するよりとても高くなりいます。
I always get things cheaper when I buy online as compared to buying from the shop.
*It is cheaper to buy online than from the store.
This means that based on your past experiences you feel like it's cheaper to buy online as compared to a physical store.
For example:
A: I see you always buying things from Amazon. Why?
B:It is cheaper to buy online than from the store.
*It is cheaper to buy online than from the store.
これは過去の経験によってお店で買うよりオンラインで買う方が安い事が分かったということ。
例:
（英文）
A: I see you always buying things from Amazon. Why?
B:It is cheaper to buy online than from the store.
（訳）
A:いつもアマゾンで物を買っているのを見るけど、なんで？
B：お店で買うよりオンラインで買った方が安いんだ。
It's cheaper to buy things online than at the store.
こんにちは。
様々な言い方ができると思いますが、例えば次のような英語表現はいかがでしょうか：
It's cheaper to buy things online.
オンラインで買った方が安いです。
It's cheaper to buy things online than at the store.
お店で買うよりオンラインで買った方が安いです。
cheaper は「より安い」という意味の英語表現です。
cheap だけで「安い」となります。
ぜひ参考にしてください。
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アメリカ合衆国 
日本 
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