The cost is $567.77 per chair plus tax.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	2:det	_
2	cost	cost	NOUN	NN	Number=Sing	4	nsubj	4:nsubj|9:nsubj	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	4:cop	_
4	$	$	SYM	$	_	0	root	0:root	SpaceAfter=No
5	567.77	567.77	NUM	CD	NumForm=Digit|NumType=Card	4	nummod	4:nummod	_
6	per	per	ADP	IN	_	7	case	7:case	_
7	chair	chair	NOUN	NN	Number=Sing	4	nmod	4:nmod:per	_
8	plus	plus	CCONJ	CC	_	9	cc	9:cc	_
9	tax	tax	NOUN	NN	Number=Sing	4	conj	4:conj:plus	SpaceAfter=No
10	.	.	PUNCT	.	_	4	punct	4:punct	_
