As the other answers mention, sacrifices, especially NV sacrifices against Vulnerable slams, are common, for exactly this reason - 800 beats 1430. Because at IMPs the difference matters, it's more likely that they'll take the sacrifice when they expect it will be 800 into 1430 (1400 into 1430 gains 1 IMP, but if they're wrong and it's 1700 instead, it loses 7). At matchpoints, where 1400 can be almost as good a score as 500, provided the slam makes for 1430 and few find the sacrifice, you'll see more aggressive sacrifices.
But another reason why it might be more common in home games is that they may still be using the old scoring, because that's what's printed on their rubber pads from 30 years ago. In the old scoring, NV downtricks went 100, 300, 500, 700, 900... instead of 1, 3, 5, 8, 11.... In duplicate, that changed in 19871; in rubber it was years later. But it has changed, and any game should be using the new scoring.
1: The story goes that Edgar Kaplan bid 7H Vulnerable, and a young Jeff Meckstroth bid 7S on nothing. He took 2 tricks against the making grand, gaining a profit for -2100 vs -2210. Kaplan was outraged, and since he was on the Laws Commission, he got the law changed (now you have to take 5 tricks for -2000).