DealsAdapter.groovy

static isPricePositive(dealId) {
    def response
    await().until({
        response = is200(dealId)
    })
    response.price > 0
}

static is200(dealId) {
    response = getDeal(dealId)
    response.statusCode() == 404 ? false : response.path("")
}

static getDeal(dealId) {
    def response = 
    when()
        .get("deal/$dealId")
    .then()
        .extract().response()

    response
}