we have a free paper here called the friday ad, where people sell unwanted things. i bought a linden baby bouncer plus for £5, great bargain and i also saw one at a boot sale last week for £5. we put Liam in it the other week and he cried, so am going to leave it for another couple of weeks.
I find that he hates to sit down. he likes to be on his feet constantly and goes stiff when you try to make him sit down. Kieran walked early at the day before he was 9 months, so i think that Liam might be the same.