If all you need is some text or data presented in a table-like way, you need no extension, you could just use a pre block and tabulate to taste:
A header Another header Price
----------------------------------------------------
Some text here Another bit of text 34,10
Lorem ipsum In principo creavit 624,45
----------------------------------------------------
Total: 658,55
The result is primitive but flexible as you can be very creative with your formatting.
If you need to output an HTML table, then you need a specific syntax.
I really like the Pandoc simple+multiline tables. They have the same benefits as Github flavored ones and are very legible, easier to write, visually light, intuitive (no special char to remember)…
If we don’t need alignment (some argued it should be left to CSS) we could imagine an even simpler syntax for basic tables:
# Header Header 2
| First field Second field
A header (# or another character) followed by a pipe on the next line would be a table header line. 2 or more spaces mean a new column.