He at some points appears to have limited to no morals as supported by this passage in the book, (When talking about "winning" a bible) “It is possible that Tom's mental stomach had never really hungered for one of those prizes, but unquestionably his entire being had for many a day longed for the glory and the eclat that came with it.” That passage shows that he had no interest in the religious part of owning the Bible and only wanted it for the attention and glory that came with it. Another passage that supports that is “At the door Tom dropped back a step and accosted a Sunday-dressed comrade:
"Say, Billy, got a yaller ticket?"
"What'll you take for her?"
"What'll you give?"
"Piece of lickrish and a fish-hook.”
“Less see 'em."
Tom exhibited. They were satisfactory, and the property changed hands. Then Tom traded a couple of white alleys for three red tickets, and some small trifle or other for a couple of blue ones. He waylaid other boys as they came, and went on buying tickets of various colors ten or fifteen minutes longer.”
This passage supports the fact that he just wants the honor and instead of working to earn it he almost runs a black market to get the tickets.
Tom doesn't have too many morals and he will go through even the most deceitful ways to get what he wants. Many people have gone through things using trickery or cheating because that is usually the easier way, but it is also that path that is harder on the heart. Be true