In our church, members pay 1/10 of their "increase" (defined however the individual members choose to define that) as tithing. As clerk of the local ward, I occasionally see the amounts people pay as tithing.
I have two primary reactions. The first is when I see a large amount of tithing: "Wow, s/he makes that much money and still pays tithing? I'm impressed at his/her dedication!"
The second is when I see a small amount of tithing: "Wow, s/he is on that tight of a budget and still pays tithing? I'm impressed at his/her dedication!"
In short, paying any tithing is a manifestation of faith, whether you give of your wealth or give a widow's mite. There's no dollar limit, high or low, to the Lord's blessings.