fix price methods #9

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Validation
	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]
	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: 3.11
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .[dev]
	- name: Format
	run: \|
	black --check .
	- name: Lint
	run: \|
	ruff check
	- name: Test
	run: \|
	pytest

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